DEVELOPMENT OF A NEW GENERATION STRATIFIED CHARGE ENGINE ON THE BASE OF “MR-PROCESS” COMBUSTION MECHANISM

Abstract

Today, with the increasing seriousness of global warming, emission standards related with internal combustion engines continuously decrease the upper limits of exhaust gases emissions. CO2, which is the most critical human-sourced greenhouse gas due to its contribution to global warming, will be limited to 100 – 110 g / km by the year 2020. Decreasing the CO2 emissions is possible only with the decrease of fuel consumption, and this can be done most effectively by operating the engine with stratified charge principle in which lean air-fuel composition (l>1) is used at all working regimes. In this context, a stratified charge engine operated with “MRProcess” - Two-Stage Combustion Mechanism, which is proposed in Azerbaijan Technical University (AzTU) and has been developing in cooperation of Warsaw Technical University (WTU), and ITU, is presented in order to achieve this goal. The development of a gasoline engine using stratified charge concept is emphasized. Moreover, CO2 emission of a stratified charge engine is calculated by using a thermodynamic model. It is seen that the CO2 emission of a vehicle with conventional gasoline engine is above 160 g / km, and can be decreased to 120 g / km by using stratified charge, considering that the vehicle is travelling at constant speeds of 60 and 90 km/hour

Keywords

• Spark ignition (SI) engine, NOx and CO2 emissions, Stratified Charge, “MR-Process”